DP Biology (first assessment 2025)

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Question 22N.2.SL.TZ0.3c

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Date November 2022 Marks available [Maximum mark: 1] Reference code 22N.2.SL.TZ0.3c
Level SL Paper 2 Time zone TZ0
Command term State Question number c Adapted from N/A
c.
[Maximum mark: 1]
22N.2.SL.TZ0.3c
(c)

State one other gas that contributes to global warming.

[1]

Markscheme

methane/nitrous oxide/water vapour/ozone/CFCs/other halogenated gases;

Examiners report

Nearly all candidates could name another greenhouse gas that is contributing to global warming. Methane was the commonest answer. Water vapour was also allowed as it is increasing in the atmosphere.

Syllabus sections